Visual Inspection of the Hydraulic Hoses and Tubes

TASK 29-11-49-200-010-A
Visual Inspection of the Hydraulic Hoses and Tubes

WARNING: DO NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. HYDRAULIC FLUID IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY. FLUSH HYDRAULIC FLUID FROM YOUR EYES, MOUTH OR SKIN WITH WATER. GET MEDICAL AID IF YOU GET HYDRAULIC FLUID IN YOUR EYES OR MOUTH.

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

CAUTION: DO NOT LET HYDRAULIC FLUID FALL ON THE ENGINE. ANY UNWANTED HYDRAULIC FLUID MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FLUID CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND SOME PARTS.

1. Reason for the Job
This task gives the procedure for a visual inspection of the hydraulic hoses and tubes without component removal.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	LIGHT SOURCE - INSPECTION
No specific	AR	MIRROR - INSPECTION
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-002)	cleaning fluid
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB
FOR [1000EM1] (ENGINE-1)
437AL, 438AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
Engine Hydraulic Tubes

3. Job Set-up
Subtask 29-11-49-860-058-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001).
(2) Depressurize the Green hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).
(3) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system:

on the ground service panel 197CB.

(4) Put a warning notice(s) on the access door 195BB to tell persons not to pressurize the Green hydraulic reservoir.

Subtask 29-11-49-941-053-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:

put WARNING NOTICE(S) to tell persons not to start the engine.

(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) Put WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system:

in the cockpit, on the HYD section of the overhead panel 40VU.

(4) On the overhead maintenance panel 50VU:

make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.

(5) Put WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 29-11-49-010-053-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Open the fan cowl door (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the engine.

4. Procedure
Subtask 29-11-49-110-051-A ** ON A/C NOT FOR ALL

A. Preparation before Examination
(1) Clean the hydraulic tubes

Engine Hydraulic Tubes ** ON A/C NOT FOR ALL

(a) Use a clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with cleaning fluid (Material No.V01-002) to clean the tubes.
(b) Dry the tubes with a clean lint free cloth.

Subtask 29-11-49-210-050-A ** ON A/C NOT FOR ALL

B. Examine the hydraulic tubes with the LIGHT SOURCE - INSPECTION and the MIRROR - INSPECTION

Engine Hydraulic Tubes ** ON A/C NOT FOR ALL

(1) Examine the hydraulic tubes for correct attachment.
(a) If the tubes are loose, examine these items for damage, wear and loss of torque:
1 The attachment bolts.
2 The attachment clips.
3 The wire that safeties the connections.
4 The tube connection nuts and the unions.
5 The attachment brackets.
(b) If one (some) of the items has (have) damage, wear or loss of torque, reject it (them).
(2) Examine the hydraulic tubes connections for leaks. No leaks are permitted.
(a) If you find leaks:
1 Examine the attachment bolts and the tube connection nuts for loss of torque.
2 If there is a loss of torque examine the bolts and the tube connection nuts for damage and wear.
3 If you find damage or wear, reject it (them).
(3) Examine the general condition of the hydraulic tubes
(a) Examine the tubes for cracks, dents and damage
1 If the tube(s) has (have) cracks, reject it (them).
2 If the tube(s) has (have) dents or damage, reject it (them).

5. Close-up
Subtask 29-11-49-942-052-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).

Subtask 29-11-49-410-053-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) Close the door 195BB.
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 00:18:02 UTC